If one bag of masonry cement will lay 40 blocks, how many bags does it take to lay 170 blocks? (Give whole and fractional parts of bags)
What will be an ideal response?
4 1/4
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Answer the following statement(s) true (T) or false (F)
1, An electrician must know the symbols and terms used in automatic control diagrams to be able to wire, install, troubleshoot, and maintain automatic control equipment. 2. Remote control of a controller uses contactors, relays, pushbuttons, sensors, and possibly electronics. 3. Magnetic switches used in controllers cannot be used with remote control and are expensive. 4. The manufacturing and materials-handling industries can predict maintenance with great certainty and help with failure analysis based on E stop systems. 5. SCADA connections and RTUs and HMIs are increasingly being connected through systems that uses a manufacturer-specific protocol for each component.
The ____ sets standards for steel designations using an arbitrary number to indicate chemical compositions and specify minimums for strength and ductility.
A. American Society for Testing and Materials B. American Welding Society C. American Iron and Steel Institute D. American Society of Mechanical Engineers
A well-placed tree can reduce the summer room temperature of a frame house by as much as _____ degrees
A) 10 B) 15 C) 20 D) 25
To control creeping inflation in the early 1970s, President Richard Nixon
A. imposed a 90-day wage and price freeze. B. put the United States back on the gold standard. C. sought a system of international currency stabilization. D. lowered Social Security payments. E. pressured the Federal Reserve Board to raise interest rates.